diff --git a/README.md b/README.md
index b02e6f8..a40bcbd 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Libnyquist
 Libnyquist is a small C++11 library for reading sampled audio data from disk or memory. It's ideal to use as an audio asset frontend for games, audio sequencers, music players, and more.
 
-The library steers away from patent-encumbered formats and those with non-BSD licensed codec implementations (such as MP3 and AAC, respectively). 
+The library steers away from patent or GPL license encumbered formats (such as MP3 and AAC). For portability, libnyquist does not link against platform-specific APIs like Windows Media Foundation or CoreAudio, and instead bundles the source code of reference decoders as an implementation detail. 
 
 Libnyquist is meant to be statically linked, which is not the case with other popular libraries like libsndfile (LGPL). Furthermore, the library is not concerned with legacy format support (for instance, A-law PCM encoding or SND files). 
  
@@ -11,13 +11,12 @@ While untested, there are no technical conditions that preclude compilation on o
 
 Regardless of input bit depth, the library hands over an interleaved float array, normalized between [-1.0,+1.0]. At present, the library does not provide resampling functionality. 
 
-* Wave
+* Wave (+ IMA-ADPCM encoding)
 * Ogg Vorbis
 * Ogg Opus
 * FLAC
 * WavPack
 * Musepack
-* Core Audio Format (Apple Lossless / AIFF) (WIP)
 
 ## Encoding
 Simple but robust WAV format encoder now included. Extentions in the near future might include Ogg. 
diff --git a/libnyquist.vcxproj/v120/libnyquist.vcxproj b/libnyquist.vcxproj/v120/libnyquist.vcxproj
index 844a1f6..fed0004 100644
--- a/libnyquist.vcxproj/v120/libnyquist.vcxproj
+++ b/libnyquist.vcxproj/v120/libnyquist.vcxproj
@@ -68,6 +68,7 @@
     <ClInclude Include="$(ProjectDir)..\..\include\libnyquist\VorbisDecoder.h" />
     <ClInclude Include="$(ProjectDir)..\..\include\libnyquist\WavEncoder.h" />
     <ClInclude Include="$(ProjectDir)..\..\include\libnyquist\RiffUtils.h" />
+    <ClInclude Include="..\..\include\libnyquist\IMA4Util.h" />
     <ClInclude Include="..\..\include\libnyquist\MusepackDecoder.h" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
diff --git a/libnyquist.vcxproj/v120/libnyquist.vcxproj.filters b/libnyquist.vcxproj/v120/libnyquist.vcxproj.filters
index e05fe97..4df6450 100644
--- a/libnyquist.vcxproj/v120/libnyquist.vcxproj.filters
+++ b/libnyquist.vcxproj/v120/libnyquist.vcxproj.filters
@@ -147,6 +147,9 @@
     <ClInclude Include="..\..\include\libnyquist\MusepackDecoder.h">
       <Filter>include</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\libnyquist\IMA4Util.h">
+      <Filter>include\util</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="include">
diff --git a/libnyquist.vcxproj/v140/libnyquist.vcxproj b/libnyquist.vcxproj/v140/libnyquist.vcxproj
index bb4f532..d1e8879 100644
--- a/libnyquist.vcxproj/v140/libnyquist.vcxproj
+++ b/libnyquist.vcxproj/v140/libnyquist.vcxproj
@@ -68,6 +68,7 @@
     <ClInclude Include="$(ProjectDir)..\..\include\libnyquist\VorbisDecoder.h" />
     <ClInclude Include="$(ProjectDir)..\..\include\libnyquist\WavEncoder.h" />
     <ClInclude Include="$(ProjectDir)..\..\include\libnyquist\RiffUtils.h" />
+    <ClInclude Include="..\..\include\libnyquist\IMA4Util.h" />
     <ClInclude Include="..\..\include\libnyquist\MusepackDecoder.h" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
diff --git a/libnyquist.vcxproj/v140/libnyquist.vcxproj.filters b/libnyquist.vcxproj/v140/libnyquist.vcxproj.filters
index 3d8ba44..71458ee 100644
--- a/libnyquist.vcxproj/v140/libnyquist.vcxproj.filters
+++ b/libnyquist.vcxproj/v140/libnyquist.vcxproj.filters
@@ -147,6 +147,9 @@
     <ClInclude Include="..\..\include\libnyquist\MusepackDecoder.h">
       <Filter>include</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\libnyquist\IMA4Util.h">
+      <Filter>include\util</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="include">